Tip No: 1 - Turn the Tap Off!
This may seem obvious, but starting with the obvious is the best foundation to solid water conservation.
If washing up by hand, don’t let the tap run continuously, even when it comes to rinsing plates off, use a wet sponge to remove the worst of the food rather than running every plate under the tap.
If you have a double bowl sink, half fill one with washing water and the other with rinse water, this way you can remove soapy residue from clean crocks without running the tap.
And you've probably guessed where this is going, but the rinse water will be mild enough to use to water your house plants or garden with after!